Question

a substance that speeds up a reaction but is not used up in the reaction and is neither a reactant or a product.
○ catalyst
○ anion
○ cation
○ reactants

Explanation:

A catalyst is defined as a substance that increases the rate of a chemical reaction without being consumed in the process and is not a reactant or product. An anion is a negatively charged ion, a cation is a positively charged ion, and reactants are substances that undergo a reaction. So the correct option matches the definition of a catalyst.

Answer:

A. catalyst